Combine like terms.6x2y - 4 - 5xy2 + 7x2y - 8
A. 13x2y - 5xy2 - 12
B. 6x2y + 2xy2 - 12
C. 8x2y - 12
D. 13x2y - 5xy2 - 4
Answer: A
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The graph below shows solution curves of a differential equation. Find an equation for the curve through the given point.
= sin x + cos x
A. y = sin x - cos x +1 B. y = sin x - cos x -2 C. y = sin x - cos x -1 D. y = sin x - cos x
Find the indicated probability.The age distribution of students at a community college is given below. Age (years)Number of students (f)
1094?A student from the community college is selected at random. Find the probability that the student is at least 31. Round approximations to three decimal places.
A. 0.931 B. 76 C. 0.048 D. 0.069
Estimate the sum, difference, product, or quotient involved in the problem.An advertisement states that television sets are on sale at B&G Electronics. The prices are: src="https://sciemce.com/media/4/ppg__rrr0708191005__f1q142g5.jpg" alt="" style="vertical-align: -4.0px;" /> set cost than a 
set, $147.99; 19-inch set, $208.95; 
set, $231.99; 
set, $289.97; 
set, $519.97. About how much more does a 
set? Estimate to the nearest ten.
A. $130
B. $150
C. $120
D. $140
Solve the problem.Let f(x) = x1.82 - x1.3. Approximate f(2.72) to the nearest hundredth.
A. x ? -0.29 B. x ? -0.11 C. x ? 3.06 D. x ? 2.51